Setting car speed for Scalextric digital

I have searched the threads but was unable to find what I'm looking for.

I want to be able to set the car speed for kids, so they will be able to drive the cars without continuously de-slotting. This would be for running the cars around the track, not necessarily for race mode. There may be 6 kids at one time or just 1 or 2 and myself. Some kids may be more advanced so I may not want to throttle them back as much.

In the driver setting window , in the tab page "C7042 options" modify the Max Power to 50% or other value.More information Scalextric Digital and Pc Lap Counter here: http://www.pclapcounter.be/scalextric_digital_c7042.html